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RCIM 2008 - - hArtes_Ferrara

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  • 1. The hardware application platform of the hArtes project Università degli Studi di Ferrara - Dipartimento di Fisica RCIM - Milano – December 19th, 2008
  • 2.
    • hArtes’ main goal: support, with appropriate tools, the development of complex applications on embedded heterogeneous reconfigurable systems. Our hardware platform provides a number of heterogeneous computing sub-systems, such as DSPs, general-purpose CPUs and configurable elements (in the shape of FPGAs). Demonstrators for the applications: mainly in the audio realm  support for high-quality I/O audio subsystems on the platform.
    • Roles of the FPGAs in the platform architecture:
    • one FPGA-based subsystem supports the complex I/O system for audio streams, moving audio signals from/to platform shared memory with full hardware support;
    • two high-end FPGAs, tightly coupled to traditional processors, make up the reconfigurable core of the processor, whose exploitation will be made possible to designers without specific FPGA know-how by the hArtes software tools.
    The hardware application platform of the hArtes project
  • 3.
    • Demonstrator applications are currently focused on two fields:
    • audio applications for advanced Car Information Systems (CIS)
    • immersive audio (e.g., Teleconferencing).
    • These fields require different levels of complexity: computational load ranging from 2 to more than 10 Gflops; I/O requirements ranging from few low-quality audio channels up to 64/32 high-quality, digital audio channels (24 bits per sample at 48/96 KHz sampling rate).
    • Key features required by the applications :
    • (1) integrate several elements of an heterogeneous computer architecture and provide sufficient interconnection between them to support tightly-coupled computational tasks;
    • (2) support a modular system structure, starting from a simple and cheap entry-level configuration and extending to more performing systems (up to a computational power of some tens of Gflops);
    • (3) an architecture in which new processing elements (that is, additional heterogeneous components) can be incorporated in a compatible way at a later stage of the design process;
    • (4) provide adequate I/O channels, both general purpose (e.g., USB, Ethernet) and with specific standards applicable for audio signal processing (e.g., ADAT lightpipe).
    Application requirements
  • 4. Main Board architecture hArtes hardware platform overview
  • 5. Xilinx XC4VFX100
  • 6. Main board with all daughter boards BACK FRONT
  • 7. Main board layout BACK FRONT
  • 8. (320) Floorplan of the XC4VFX100 device (320, not used ) (128) Fixed function IPs area Re-programmable area Internal organization of the BCE FPGA
  • 9. Actual internal organization Re-programmable area Fixed function IPs area
  • 10. (Preliminary) MOLEN architecture support in the BCE For a description of the MOLEN architecture, please visit the TU-Delft CE website: http://ce.et.tudelft.nl/MOLEN
  • 11. The plaftorm @ work: the audio demo developed for the 2nd hArtes review
  • 12. The plaftorm @ work: the audio demo developed for the 2nd hArtes review MOTU ADAT interface PC optical fibres
  • 13. The plaftorm @ work: the audio demo developed for the 2nd hArtes review audio streaming support (64 audio channels in + 64 out)
  • 14. The plaftorm @ work: the audio demo developed for the 2nd hArtes review audio streaming support (64 audio channels in + 64 out) Audio streaming (input push, output pull) Audio buffering Interrupts for all 64+64 channels Fully performed at hard(firm)-ware level Soft-configurable
  • 15. Conclusions
    • We developed an hardware platform to suit the requirements of the toolchain and demonstrator applications for the hArtes project.
    • The hardware platform is currently ready for the integration with the toolchain and with the MOLEN architecture.
    • In the future we plan to develop an improved version of the platform, using feedbacks provided by the experience of the first application tests; performance improvements are also foreseen, as we plan to deploy four BCEs on a new system (depending of applications requirements). Acknowledgments
    • This work is sponsored by the hArtes project (IST-035143), supported by the Sixth Framework Programme of the European Community under the thematic area ”Embedded Systems”.